Kit-of-parts containing a sealing layer and a photopolymer

Patent metadata

Field	Value
Publication number	US-2018330753-A1
Application number	US-201615774167-A
Country	US
Kind code	A1
Filing date	Nov 9, 2016
Priority date	Nov 9, 2015
Publication date	Nov 15, 2018
Grant date	—

Abstract

The invention relates to a kit-of-parts comprising at least one sealing layer C and a photopolymer B, a process for producing an at least partly interconnected layered setup formed of at least 2 layers, the use of the at least one sealing film C to protect the photopolymer B, the use of the kit-of-parts for the process referred to, a sealed holographic medium comprising the photopolymer and optical displays and security document comprising the sealed holographic medium.

First claim

1 .- 15 . (canceled)

16 . A kit-of-parts comprising at least one sealing layer C and an areal photopolymer B.

17 . A process for producing an at least partly interconnected setup formed of at least 2 layers comprising
a) an areal photopolymer B containing a volume hologram, and b) at least one at least partly actinically cured sealing layer C,
wherein
the photopolymer B containing a volume hologram comprises a crosslinked matrix;
the sealing layer C is less than 50 μm in thickness and has a viscosity of 2000 Pa s to 2 million Pa s, preferably 4000 Pa s to 1.6 million Pa s and comprises a physically drying resin C1, an acryloyl- or methacryloyl-functional reactive diluent C2 and a photoinitiator C3;
and the sealing layer C is laminated onto the photopolymer B and
thereafter cured with actinic radiation.

18 . The kit-of-parts according to claim 16 , wherein the photopolymer B is in the form of a layer, preferably on a preferably transparent thermoplastic substrate film A or on some other support.

19 . The kit-of-parts according to claim 16 , wherein the sealing layer C is present on a supporting film D.

20 . The process according to claim 17 , wherein a further sealing layer C is laminated onto the reverse side of the both-sidedly areal photopolymer B.

21 . The process according to claim 17 , wherein an at least partly interconnected setup formed of at least 3 layers comprising an areal photopolymer B containing a volume hologram, at least one at least partly actinically cured sealing layer C and a supporting film D is produced.

22 . The process according to claim 17 , wherein an at least partly interconnected setup formed of at least 4 layers comprising a layer B consisting of a photopolymer, containing a volume hologram and applied atop a substrate film A, at least one at least partly actinically cured sealing layer C and a supporting film D is produced.

23 . The process according to claim 17 , wherein the sealing layer C post lamination onto the photopolymer layer B is at least partly actinically cured within 60 minutes, preferably within 5 minutes, more preferably within less than 60 seconds.

24 . The process according to claim 17 , wherein the layer D or the layers D are at least partly delaminated post the at least partial curing of sealing layer C.

25 . Use of sealing layer C to protect a photopolymer B according to claim 16 .

26 . Use of the kit-of-parts according to claim 16 for producing an at least partly interconnected setup formed of at least 2 layers comprising
c) an areal photopolymer B containing a volume hologram, and
d) at least one at least partly actinically cured sealing layer C,
wherein
the photopolymer B containing a volume hologram comprises a crosslinked matrix;
the sealing layer C is less than 50 μm in thickness and has a viscosity of 2000 Pa s to 2 million Pa s, preferably 4000 Pa s to 1.6 million Pa s and comprises a physically drying resin C1, an acryloyl- or methacryloyl-functional reactive diluent C2 and a photoinitiator C3;
and the sealing layer C is laminated onto the photopolymer B and thereafter cured with actinic radiation.

27 . A sealed holographic medium comprising a photopolymer B according to claim 16 .

28 . An optical display comprising a sealed holographic medium according to claim 27 .

29 . An autostereoscopic and/or holographic displays, projection screens, projection lenses, displays having switchable restricted emission characteristics for privacy filters and bidirectional multiuser screens, virtual displays, head-up displays, head-mounted displays, illumination symbols, warning lamps, signalling lamps, floodlights and display panels comprising a sealed holographic medium according to claim 27 .

30 . A security document comprising a sealed holographic medium according to claim 27 .

31 . The process according to claim 17 , wherein the photopolymer B is in the form of a layer, preferably on a preferably transparent thermoplastic substrate film A or on some other support.

32 . The process according to claim 17 , wherein the sealing layer C is present on a supporting film D.

Assignees

• Covestro Deutschland Ag

Inventors

• Fäcke Thomas
• Kostromine Serguei
• Orselli Enrico
• Flemm Ute

Classifications

• G11B7/254

  of protective topcoat layers · CPC title

• G11B7/24044 Primary

  for storing optical interference patterns, e.g. holograms; for storing data in three dimensions [3D], e.g. volume storage (G11B7/24038 takes precedence) · CPC title

• G11B7/245 Primary

  containing a polymeric component · CPC title